package 链表;

import java.util.LinkedList;
import java.util.Queue;

public class Node {
    public String val;
    public Node prev;
    public Node next;

    public Node(String val){
        this.val = val;
    }

    @Override
    public String toString() {
        return "Node{" + "val=" + val  + "}";
    }

}

